Spunbonded nonwoven fabrics
US9693912B2 · kind B2 · utility
0Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2012 |
| Grant date | Jul 4, 2017 |
| Priority date | — |
| Expiry date | Feb 15, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/612
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An object of the invention is to obtain spunbonded nonwoven fabrics including thin hollow fibers which have excellent lightweight properties and uniformity as well as exhibit high strength and flexibility. An aspect of the invention is directed to a spunbonded nonwoven fabric including hollow fibers of a propylene polymer, the hollow fibers satisfying the following requirements (a) to (c): (a) the C-axis orientation is at least 0.85, (b) the average fiber diameter is 5 to 20 μm, and (c) the hollowness is 5 to 30%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.